The profitable impact on ecological system made the upcycling of plastic waste as one of the captivating issues in scientific world. The current work highlights the sustainable approach to transform the plastic waste comprises of bottles, used cups and polyethylene bags via simple heating to fluorescent carbon dots (C-dots). The obtained C-dots have displayed the absorption peaks around at 260 nm with size ranging between 5 and 30 nm. The upcycling has produced the structural changes in plastic waste and affected the optical properties of C-dots. The three types of used plastic waste as precursor have displayed excellent emission properties with peak positioned around 422 nm and quantum yield (QY) values ∼62, 65 and 64% for C-dots generated from plastic polybags, cups and bottles (P-CDs, C-CDs and B-CDs) respectively. The toxicity profiling of C-dots has been successfully tested by employing multi-assay biocompatible activities i.e. antibacterial and antifungal activities. The potential prospective of C-dots derived from plastic waste have further been explored in analytical applications involving selective copper metal ion sensing in aqueous media. The outcomes of the current studies have highlighted the potential accomplishment in preserving environment fate and giving response towards the budding social hitch of plastic waste.

对生态系统的有利影响使塑料废物的再利用成为科学界引人入胜的问题之一。当前的工作强调了一种可持续的方法，可以通过简单的加热将塑料废物（包括瓶子，用过的杯子和聚乙烯袋）转变为荧光碳点（C点）。所获得的碳点在260 nm附近显示出吸收峰，尺寸在5到30 nm之间。升级引起了塑料废料的结构变化，并影响了碳点的光学性能。三种类型的废塑料作为前体已显示出优异的发射性能，其峰值位于422 nm附近，并且由塑料袋，杯子和瓶子（P-CD）产生的C点的量子产率（QY）值分别约为62％，65％和64％。 ，C-CD和B-CD）。通过使用多种测定法的生物相容性活性（即抗菌和抗真菌活性），已成功测试了C点的毒性分布。在涉及水性介质中选择性铜金属离子感测的分析应用中，对塑料废料产生的C点的潜在前景进行了进一步探讨。当前研究的结果强调了在保护环境命运和应对塑料废物社会萌芽方面的潜在成就。